Which type of neurons are found in the retina?

Identify $A$ and $B$ from the figure and what is the function of the part labelled as $C$?

Afferent nerve fibres carry impulses from

Nissl's granules are absent in

Match List $- I$ with List $- II$:

List $- I$	List $- II$
$a$. Multipolar neuron	$i$. Somatic neural system
$b$. Bipolar neuron	$ii$. Cerebral cortex
$c$. Myelinated nerve fibre	$iii$. Retina of eye
$d$. Unmyelinated nerve fibre	$iv$. Spinal nerves

Choose the correct answer from the options given below:

Mark the following statements as true/false and choose the correct option from the codes given below:
$I.$ Neuroglial cells are the packing and supporting cells found in the brain and spinal cord.
$II.$ Oligodendrocytes are a category of glial cells that form myelin sheaths around the axon.
$III.$ Microglia provide mechanical support to the neurons.
$IV.$ Astrocytes communicate with one another through potassium channels.